Basebox5 and some 911 stop at first beep

Hello we have some Basebox5 and RB911 working. After a few days working correctly some of them after reboot stop to operate. The devices are switched on but stop at the first beep.

I had not yet time to try the Netinstall but the number of such cases is increasing in the last period.

cetalfio

Have you upgrade the routerboard to the latest routeros?
http://www.wirelessinfo.be/index.php/mikrotik/pages/upgrade
Update also the bios
http://www.wirelessinfo.be/index.php/mikrotik/pages/rbupgrade

You should use netinstall
http://www.wirelessinfo.be/index.php/mikrotik/pages/netinstalle

I did not use netinstall for now due to time constraints but I think that some event, such as a sudden shut down, this can cause the problem.

cetalfio